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Strengths Weaknesses
BCS ·Includes crimes which have not been reported to by Telescoping- Usually BCS asks
police and so gives a clear picture of the incidence of whether somebody has suffered
crime than official statistics. victimisations within a certain time
frame but people may report
victimisations that occurred outside
of that timeframe. For instance,
suppose you were raped 13 months
ago but the survey asks if you were
raped in the previous 12 months, what
you report? Most people in this
circumstance would report that they
had been raped in the past 12 months
even if the offense was reported
outside the prescribed period... this is
known as "telescoping."
Self-Report ·Provides qualitative data which has is rich in ·Ppts may exaggerate or are unable to
Studies information. remember their crime and therefore
results cannot be completely valid.
Official ·Provides quantative data which can be analysed ·Not all crimes are recorded by police
statistics easily. and so not reliable.
·Therefore results are not completely
valid because official statistics will not
show the entire picture of crime rate.…read more

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Strengths Weaknesses
The Typological ·Can be applied to all cases of ·The approach was based on interviews
Approach sexually motivated murders and some with 36 serial sex offender which is a very
cases of arson. small sample and does not represent all
serial sex offender's behaviours and
therefore cannot be generalised.
·Douglas recognised a `mixed offender'
who could be categorised as either
organised or disorganised.
·Alison et al. suggests the approach
assumes that an offender's behaviour will
be similar to the way they behave in
everyday life. They suggested a
personality theory which states that a
person's behaviour will be different in
different situations.
Geographical ·Can be used for different types of ·The location of the crime is not enough to
Profiling crime and is therefore more applicable base the profile on. The location needs to
and useful than the typological be understood in the context of the
approach. offender's behaviour at the scene, the
time of the crime and the victim (Canter
and Youngs).…read more

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